Skin stop for leather-finishing machines



F.F.SLOCOMB SKIN STOP FOR LEATHER FINISHING MACHINES Filed Aug. 16. 1921 INVENTOR Patented Aug. id, 19230 arren stares FRANK F. SLOCOIMB, OF ST. GEORGES HUNDRED, DELAWARE.

.SKIN STOP FOR LEATHER-FINISHING MACHINES.

Application filed August 16, 1921. Serial No. 492,765.

To all whom it may concern:

Be it known'that I, FRANK F. SLOCOliiB a citizen of the United States, residing; at St. Georges Hundred, county of New Cass tle,-State of Delaware have invented a new and useful Skin Stop for Leather-Finishing Machines, of which the following is a specification.

In certain types of leather finishing ma chlnery, as machines for seasonlng or finlsh- V 111g leather of the character seenin the patent to James U. Flanagan, No. 1552,186,

V patented September 7,1920, it hasb een the practice to employ anendless apron or bolster upon which the skins to be finished travel, in conjunction with a plurality of brush rolls so collocated w th respect to said bolster that the seasoning'liquor is applied and rubbed into the skins carried upon said bolster.

In the practical operation of the machine of the patent aforesaid I have found it de-' sirable to increase the number of the front 7 brush rolls,"and have also found it desirable in order to prevent the heads and shanks of soft or flimsy skins from being turned or kicked over by the rapid forward push of the brush rolls, to employ one or more revolving skin stops, each consisting of a rod having end collars thereon, which trunnions whichrevolve in the slots or open vertical bearings in brackets, which are secured tothe frame work of the leather ,finishing machine 1n such a wayjthat sald brackets can beadju sted lengthwise of the frame work so as to position the sk n stops 3 with, respect to the brush rolls accordingto 40 requirements, the skins passing under said skinstop's fl. p Q k It] will be understood that there issuflioient1sp ace between the bolster and the revolving, stopfor the skin to pass freely under thestop without touchingithe latter, un-

less and until some portion of the skin is thrown or kicked upward out of contact with a the bolster and over andforrvar'd in the be turned bottom up and folded over on top idirec tionof itsfmotion, 'sothat, but for the stop, the, portion so thrown forward would of the nearest portion ofthe -sk in,in which position the skin would pass under the remi in hrush rolls.

It will be' clear that the resultant damage he skin but forjthe sto would hethree 4,

fold :-first: not only the upper surface of the portion thrown over but the upper surface of the portion on which it would rest would not be acted upon by thebrush rolls, making it necessary for this portion and frequently the entire skin to be gone over by hand, which additional expense selmaking it unsightly and still further depreciating its selling price; third, as there is a very considerable pressure by the brush rolls upon the doubled thickness of the skin, a line or mark is made on the upper or'finished side of the skin entirely across at the point where it is doubled over. This line is permanent V and still further lowers the value of the skin.

I preferably employ two pairs of the brackets of the character aforesaid and two of the skin holding devices, one of which is located in proximity to the crown or bend of the bolster and the other located intermediately of the two uppermost front brush rolls which are nearest the crown or bend of the bolster.

By the provision and employment of the skin stops of the character described the skins are at'all times prevented from having any portion of same thrown or kicked forward and ,doubledover, but every portion of same is kept in contact with the bolster in proper position, and the operation of the machine as a whole is greatly improved.

To the above ends my invention consists of a novel construction of skin stops and their adjuncts for machines for finishing leather, the novel features of which will be fully set forth.

For the purpose of illustrating my invention, I have shown in the accompanying drawings forms thereof which are at present preferred by me since they will give in practice satisfactory and reliable results, although it i to be understood that the variousinstrumentalities of which my invention consists can be variously arranged and organized and that my invention is not, limited to the precise arrangement and organization of these instrumentalities as herein shown and described.

Figure 1 represents a diagrammaticlview of a leather finishing machine having applied thereto skin stops embodying my invention.

Figure 2 represents a perspective view of the upper front portion of the endless apron or bolster employed, showing a skin stop, its supporting brackets and their collocation with respect to the bolster and the skin supported thereon.

are mounted within the walls 6 of the brackets 7, which are provided with the extensions 8, each having the slotsO therein, whereby the brackets and the skin stop can be relatively adjusted with respect to the brush rolls and their adjuncts to the desired extent.

t will be seen that between the walls 6 are formed vertical openings or bearings 10,

within which the trunnions 5 can be dropped so that the skin stop is permitted to have the requisite up-and down move ment or play at all times.

11 designates a skin which is mounted on r the endless apnon or bolster 12, the latter passing over the front and rear drums 13 and 1% respectively which are'mounted on the shafts 15 and 16 respectively, it being noted that said bolster passes over the idler or crown shaft 17, which is collocated with respect to the drums 13 and 14, so as to be i above and between them, so that a crown or bend is imparted to the bolster at the qooint 18, which has the function of mechanically effecting the spreading out of all plaited or frilled portions of a skin, so that by the time the latter has passed over the angle formed by said crown shaft, it lies flat and straight substantially as described in the patent aforesaid.

The seasoning liquor is contained in the pan 19, in whichrevolves the fluted or other shaped feed roll 20, whereby the seasoning liquor is applied to the first brush roll 21 and thereafter rubbed in by the rolls 22 and 23, whose general collocation and arrangement will be understood from Figures 1 and 3. K

Qtdesignates the crown brush roll which xrotates in unison with the rear brush'roll 25 and as-tlre system of belting or power trans mission devices common to the drums, brush rolls, feed roll and their adjuncts is the same as described in the patent aforesaid, whereby the bolster and the brush rolls are actuated, and will be understood from the arrows on Figure '1, I deem it unnecessary to describe in detail this operation other than to say that the additional uppermost front brush roll 23 is operated in unison with thejjuXta-posed brush roll 22 by the belting or its equivalent 26;

I preferably employ two skin stopsof the character seenin Figure 1 and locate the same between the brush rolls 2 2 and 23 and between the brush rolls 23 and 2a in substantially the same manner indicated. in Figure 1, it being apparent that the collars 3 contact with the bolster12, so that the, skin stops can revolve as the bolster progresses,

the skins 11 passing under the said skin stops, so that everyportion of the same are kept in contact with the bolster in proper position.

By the employment of the additional brush roll 23 and the collocation of the skin stops between the rolls 22 and 23 and 23 and 2 1-, as seen inFigure 1, the'operation of applying 'theseasoning liquor to the skin is greatly improved in the manner above described, as is evident.

The various brush rolls can be driven at the comparative speeds described in the Flanagan patentaforesaid, and it will be. apparent that the outer. grain surface of the skin is straightened, guided and vethciently stretched on said grain side into which the seasoning is to be rubbed, and during the passage of the skin over. the crown of the bolster, the seasoning will be effectively and thoroughly applied by reason 7 skin atany stage of its manufacture, and

said skin stops may be employed in con-' junction'with a drum ora bolsternotprovided with the crown or bend 18 herein described, or in connection with any character of machine wherein it may be desired to guide a skin or to cause the'same to lay fiat during any stage of the treatment thereof. 7 7

By my invention, skins can he seasoned with precision at a rate of over-sixthou- V sand a. day, and forty dozen of goat or sheep skinsper hour and four hundred kips' or sides perhour. 3 V

I have deemed it unnecessary to show or describe in detail the framework or housing of the machine, as the construction thereof will be apparent to those skilled in the art, as will be the transmission devices employed to actuate the drums, bolster, brush rolls and the like, since the manner of operation is substantially the same as in the Flanagan patent aforesaid.

It will now be apparent that I have devised a novel and useful skin stop for leather finishing machines which embodies the tea tures of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance, shown and described preferred embodiments thereof which will give in practice satisfactory and reliable results, it is to be understood that the same is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages. 7

Having thus described my invention, what I claim as new and desire to secure by Let ters Patent, is

1. In a machine of the character stated, a skinstop, comprising a rod having collars near its outer portions adapted to contact with a skin conveyor and provided with end trunnions and end bearings for said trunnion adapted to permit movement of the latter.

2. In a machine of the character stated, a skin conveyor and a skin stop, comprising a rotatable rod capable of vertical movement and mounted in proximity to said skin conveyor, the skins traveling under said skin stop and being guided thereby and vertical bearings for the ends of said trod, whereby the latter is capable of vertical movement.

3. In a machine of the character stated, the combination of a skin carrier, means for actuating it, vertical hearings in proximity to said skin carrier; a rotatable skin stop mounted above said carrier and provided with trunnions rotatable in said vertical bearings thereby permitting an upward movement to said skin stop, and collars on said skin stop adapted to contact with said skin carrier.

4. In a machine of the character stated, the combination of a skin carrier, means for actuating it, a rotatable skin stop mounted above said carrier and provided with trunnions, vertical open bearings for said trunnions permitting an upward movement to said skin stop, and means for shifting said bearings with respect to said skin carrier.

5. In a machine of the character stated, a skin stop, comprising a rod having collars near its outer portions adapted to contact with a skin conveyor, in combination with vertically open bearings receiving the ends of said rod and permitting upward movement thereof.

6. In a machine of the character stated, a skin carrier, means for actuating it, brackets on each side of said carrier having slotted extensions permitting of adjustment and upright walls between which vertical bearings are formed and a skin stop, comprising a rod whose ends are mounted in said vertical bearings, whereby a vertical movement is permitted to said rod.

' FRANK F. SLOCOMB.

Witnesses:

E. HAYWARD FAIRBANKS, C. D. MOVAY. 

